A '''Ministry of Defence''' or '''Defense''' (see American and British English spelling differences#-ce.2C -se|spelling differences
), also known as a '''Department of Defence''' or '''Defense''', is the common name for a part of the government found in Sovereign state|states
where the government
is divided into Ministry (government department)|ministries
or departments, responsible for matters of defence. Such a department usually includes all branches of the military
, and is usually controlled by a Defence Minister
, Minister of Defence, or Secretary of Defense.
Historically, such departments were referred to as a '''Ministry of War''' or '''Department of War''', although such departments generally had authority only over the army of a country, with a separate department governing other military branches. Prior to WWII, most "Ministries of War" were Army ministries, while the Navy and the Air Force, if it existed as a separate branch, had...